Arsipoda rostrata Gómez-Zurita, 2010

Samuelson, Allan & Biondi, Maurizio, 2016, Taxonomic revision of the genus Arsipoda Erichson, 1842 (Coleoptera, Chrysomelidae) in New Caledonia, European Journal of Taxonomy 230, pp. 1-61 : 37-39

Arsipoda rostrata Gómez-Zurita, 2010

Figs 2F , 9G , 11M , 14B

Arsipoda rostrata Gómez-Zurita in Gómez-Zurita et al., 2010: 2569 .

New material

NEW CALEDONIA: 4 specimens, Koghi Mts, -22.17809 166.50569, 500–550 m, track to Cascade, forest, 4 Dec. 2008, M. Wanat leg. ( MNHW); 1 specimen, ditto, 22°11' S 166°30' E, 500–550 m, humid forest, 21 Jan. 2004 ( MNHW); 1 specimen, Dzumac Road (Mt Ouin to Mts Couvélé road junctions), 22°04.1' S 166°26.8' E, 800–900 m, 29 Dec. 2006, M. Wanat leg. ( MNHW); 1 specimen, Mt Dzumac (base), km 1.5–3 E Ouin rd jct [= road junction], -22.03710 166.49570, 800 m, rainforest, 6 Dec. 2010, R. Ruta and M. Wanat leg. ( MNHW); 1 specimen, ditto (Mt Ouin road junction), 22°01.9' S 166°28.0' E, 900 m, beating, 28 Dec. 2006, R. Dobosz and M. Wanat leg. ( USMB); 1 specimen, Mt Ouin Rd, km 0– 0.5 N of Dzumac jct, -22.03180 166.46740, 900 m, 4 Dec. 2010, R. Ruta and M. Wanat leg. ( MNHW).

Taxonomic notes

This species is similar in shape, sculpture and generally color to A. gomezzuritai sp. nov. and A. longifrons sp. nov. ( Figs 2A, F , 3C ). They are distinguishable from other Arsipoda species by the elongate antennae ( LAN /LB: ³ Ż 0.70, ♀ generally Ż 0.60) and the elongate frons with narrow frontal carina. The three species can be reliably distinguished by the shape of their genitalia ( Figs 9B, G , 10D , 11J, M, S ).

Median lobe of aedeagus ( Fig. 9G ) in ventral view fusiform, with small median tooth; ventral surface with shallow median groove; in lateral view median lobe slightly and regularly curved; dorsal ligula from half length to apical part of median lobe of aedeagus, tapered toward apex. Spermatheca ( Fig. 11M ) with widely rounded basal part; collum moderately elongate, about twice as long as apical part; ductus quite short, apically inserted.

Biometry

Male (n = 10; mean and standard deviation; range): LE = 1.38 ± 0.07 mm (1.23 Ĺ LE Ĺ 1.45 mm); WE = 0.88 ± 0.06 mm (1.78 Ĺ WE Ĺ 1.95 mm); LP = 0.42 ± 0.03 mm (0.35 Ĺ LP Ĺ 0.48 mm); WP = 0.64 ± 0.03 mm (0.58 Ĺ WP Ĺ 0.70 mm); LAN = 1.16 ± 0.09 mm (1.08 Ĺ LAN Ĺ 1.35 mm); LAED = 0.85 ±

0.03 mm (0.81 Ĺ LAED Ĺ 0.90 mm); LB = 1.98 ± 0.10 mm (1.94 Ĺ LB Ĺ 2.16 mm); LE/LP = 3.27 ± 0.14 (3.05 Ĺ LE/LP Ĺ 3.50); WE/WP = 1.37 ± 0.04 (1.32 Ĺ WE/WP Ĺ 1.44); WP/LP = 1.52 ± 0.06 (1.47 Ĺ WP/ LP Ĺ 1.64); WE/LE = 0.64 ± 0.02 (0.60 Ĺ WE/LE Ĺ 0.66); LAN/LB = 0.59 ± 0.02 (0.55 Ĺ LAN/LB Ĺ 0.63); LE/LAED = 1.61 ± 0.08 (1.51 Ĺ LE/LAED Ĺ 1.76).

Female (n = 10; mean and standard deviation; range): LE = 1.56 ± 0.08 mm (1.43 Ĺ LE Ĺ 1.68 mm); WE = 1.00 ± 0.04 mm (0.93 Ĺ WE Ĺ 1.05 mm); LP = 0.46 ± 0.03 mm (0.43 Ĺ LP Ĺ 0.53 mm); WP = 0.72 ± 0.03 mm (0.66 Ĺ WP Ĺ 0.75 mm); LAN = 1.19 ± 0.05 mm (1.10 Ĺ LAN Ĺ 1.25 mm); LSPc = 0.19 ± 0.01 mm (0.18 Ĺ LSPc Ĺ 0.21 mm); LB = 2.21 ± 0.09 mm (2.00 Ĺ LB Ĺ 2.31 mm); LE/LP = 3.38 ± 0.13 (3.19 Ĺ LE/LP Ĺ 3.71); WE/WP = 1.39 ± 0.03 (1.37 Ĺ WE/WP Ĺ 1.43); WP/LP = 1.55 ± 0.09 (1.43 Ĺ WP/LP Ĺ 1.71); WE/LE = 0.64 ± 0.02 (0.61 Ĺ WE/LE Ĺ 0.67); LAN/LB = 0.54 ± 0.01 (0.52 Ĺ LAN/LB Ĺ 0.55); LE/LSPc = 8.06 ± 0.30 (7.42 Ĺ LE/LSPc Ĺ 8.38).

Distribution

Southern Grande Terre ( Fig. 14B ).

Ecological notes

Collected in rainforest and humid forest between 500 and 900 m a.s.l. No information is available about host plants. Pollen found in the gut of some specimens.

Figures

Fig. 2. Habitus. A. Arsipoda longifrons sp. nov, Humboldt S track. B. A. montana sp. nov, Mt Humboldt. C. A. paniensis sp. nov, Mt Panié. D. A. povilaensis sp. nov, Pic d’Amoa. E. A. punctata sp. nov., Mueo. F. A. rostrata Gómez-Zurita, 2010, Koghi Mts. G. A. rutai sp. nov, Poro Plateau. H. A. shirleyae Samuelson, 1973, S Humboldt. I. A. transversa sp. nov., Mt Koghi.

Fig. 9. Median lobe of aedeagus in lateral (l), ventral (v) and dorsal (d) view. A. Arsipoda isola Samuelson, 1973, Bois du Sud. B. A. longifrons sp. nov., Humboldt S track. C. A. montana sp. nov., Mt Humboldt. D. A. paniensis sp. nov., Mt Panié. E. A. povilaensis sp. nov., Pic d’Amoa, Povila. F. A. punctata sp. nov., Mueo. G. A. rostrata Gómez-Zurita, 2010, Koghi Mts. H. A. rutai sp. nov. Poro Plateau. I. A. shirleyae Samuelson, 1973, S Humboldt.

Fig. 11. Female genitalia. A–S. Spermatheca. A. Arsipoda agalma Samuelson, 1973, N of Pic Vincent. B. A. atra sp. nov., Aoupinié. C. A. communis sp. nov., Dzumac Mts. D. A. doboszi sp. nov., Mt Do. E. A.elongata sp. nov., Mt Humboldt. F. A. evax Samuelson, 1973, Chagrin. G. A. geographica Gómez- Zurita, 2010, Mt Humboldt. H. A. gressitti sp. nov., Farino. I. A. isola Samuelson, 1973, Bois du Sud. J. A. longifrons sp. nov., Humboldt S track. K. A. paniensis sp. nov., Mt Panie. L. A. povilaensis sp. nov., Pic d’Amoa, Povila.M. A. rostrata Gómez-Zurita, 2010, Dzumac Road.N. A. rutai sp. nov.Dzumac Road. O. A. shirleyae Samuelson, 1973, Haute Rivière Bleue. P. A. transversa sp. nov., Mt Koghi. Q. A. wanati sp. nov., Mt Humboldt. R. A. yiambiae Samuelson, 1973, Yiambi. S. A. gomezzuritai sp. nov., Dzumac Mts. T. Tignum (t) and vaginal palpi (vp) of A. communis sp. nov., Mt Do. Abbreviations: a = appendix; ap = apical part; bp = basal part; c = collum or neck; d = ductus; LSPc = length of spermathecal capsule; SPc = spermathecal capsule = ap + c + bp.

Fig. 14. Distributions of New Caledonian Arsipoda. A. Arsipoda agalma Samuelson, 1973, A. evax Samuelson, 1973, A. geographica Gómez-Zurita, 2010, A. isola Samuelson, 1973 and A. rutai sp. nov. B. A. atra sp. nov., A. communis sp. nov., A. montana sp. nov., A. paniensis sp. nov. and A. rostrata Gómez-Zurita, 2010.

Fig. 3. Habitus. A. Arsipoda wanati sp. nov, Mt Humboldt. B. A. yiambiae Samuelson, 1973, Yiambi. C. A. gomezzuritai sp. nov., Dzumac Mts.

Fig. 10. Median lobe of aedeagus in lateral (l), ventral (v) and dorsal (d) view. A. Arsipoda transversa sp. nov., Mt Koghi. B. A. wanati sp. nov., Mt Humboldt. C. A. yiambiae Samuelson, 1973, Yiambi. D. A. gomezzuritai sp. nov., Dzumac Mts. E. Nomenclature. Abbreviations: amt = apical median tooth; apr = apical process; bp = basal part; dl = dorsal ligula; vs = ventral sulcus.